Tamping bar and needle.



B.1.CLENDENEN. Y

vTAIVIPING BAR AND NEEDLE. APPLlcATLoN FILED ocr. al. 19'17.

1,278,594, Patentedsept. 10,1918.

UNTTED STATES PATENT BENNETT J. CLENDENEN, 0F ESKDALE, WEST VIRGINIA.

TAMPING BAR AND NEEDLE.

Application filed October 31, 1917. Serial No. 199,530.

To all whom t may concern:

Be it known that BENNETT J. GLEN- DnNnN, a citizen of the United States, residing at Eskdale, in the county of Kanawha and State of West Virginia, have invented a new and useful Tamping Bar and Needle, of which the following is a speciiication.

The device forming the subject matter of this application is a tarnping bar, adapted to be used in mines.

The tamping bar herein disclosed possesses advantages over the old style bar now in use, in that the needle will always operate at approximately the center of the blast hole instead of operating close to the wall of the hole.

Another object of the invention is to provide novel means whereby the needle is held on the bar in such a way that it can be removed readily by a slight tap.

It is within the province of t-he disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes `in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings Figures 1 and 2 are side elevations wherein the device is viewed from different points;

Fig. 3 is an end elevation, the needle being omitted;

Fig. 4 is a cross section on the line 4-4 of Fig. 1;

Fig. 5 is a cross section on the line 5-5 of Fig. 1.

The device forming the subject matter of this application preferably is made of metal throughout and includes a bar 1 provided at one end with a tubular socket 2, the bar 1 including a broadened shank 3 merging into the socket 2. The socket 2 has a longitudinal bore a communicating with a longitudinal groove 5 fashioned in the shank 3, the groove 5 running out to nothing upon the bar 1. At its opposite end, the bar 1 is supplied with a laterally extended. plate-like foot 6 having an opening 7. The foot 6 is offset, circumiierentially ot the bar 1, from the socket 2,

so that the opening 7 is not in axial alinement with the bore 1 of the socket 2.

The numeral S denotes a needle having a head 9 at one end and a point. 10 at the other end. The needle 8 is thrust through the bore 4 of the socket 2 and passes along the groove 5. By this operation, the point 10 of the needle is not directed into the opening 7 in the foot 6, but strikes the foot G at one side of the opening 7 and close thereto. The point 10 of the needle may then be sprung slightly, to enter the opening 7 in the foot (3 and, by this operation, .the point of the needle will be frictionally held in the opening 7, it being possible to back out or loosen the needle by striking the projecting extremity of the point 10 against an object.

Let it be supposed that an approximately horizontal blast hole has been made. Then it is to be observed that in talnping such a hole with an ordinary needle, the tamping almost invariably takes place below the geometric center of the hole, which is an undesirable consideration. In the present instance the tamping will take place in the aXis of the hole, or very close thereto, because the point 10 of the needle S passes through the opening 7 in the foot 6 which, being received in the hole,serves as a guide for the needle.

Having thus described the invention, what is claimed is 1. In a device of the class described, a bar provided at one end with a socket, and equipped at its other end with a lateral foot, the foot having an opening; and a needle mounted in the socket, the needle having a point received in the opening of the foot.

2. A device of the class described comprising a bar provided at one end with a socket and supplied at its other end with a lateral foot, the foot having an opening, the opening being disposed out of coaxial alineinent with respect to the bore ot the socket; and a needle in the socket, the needle including a point engaging the foot at one side of the opening in the foot, and adapted to be as my own, I herve hereto afxed my signasprung into and advanced through the Openture n the presence 0f two Wltnesses.

ing in the foot, to engage the foot7 within BENNETT J. CLENDENEN. the contour of the opening, with 2L frctonal Vtnesses: 5 hold. H. CLENDENEN,

n testimony that I claim the foregoing DELL CLENDENE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents,

' Washington, D. G. l 

